Have you discovered dampness in the walls of your home? Then it is good to get something done about it soon. Moisture in your home is harmful to your walls and, above all, to your health. On Homedeal you will find an overview of all costs and possibilities.
What does damp proofing cost?
There are several ways of moisture proofing; the actual fighting of a damp problem or for prevention. You can find the average prices for the most common damp control work in the overview below.
| Type of damp proofing | Damp proofing | Average price including VAT and materials |
|---|---|---|
| Damp proofing (technique: injecting) | Exterior wall injecting (8 linear metres) | £800 |
| Interior and exterior cavity wall injecting (8 linear metres) | £1.500 | |
| Repairing and injecting a wall (8 linear metres) | £ 2,200 | |
| Outdoor wall impregnation (technique: impregnation) | Outdoor wall impregnation (100 m2) | £ 900 |
| Cleaning and impregnating a facade (100 m2) | £ 1.700 | |
| Filling, cleaning and impregnating a facade (100m2 | £ 3,000 |
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Price examples
Look at the examples below and see what you will get per different moisture control price ranges.
Basic moisture control
You will get the cheapest deal if your wall is still in good condition, does not need to be cleaned first and the specialist can start impregnating or injecting immediately. You often see this in newly built houses where people choose to have their facade impregnated as a precaution. This method of moisture control will cost you around £900 for a 100m2 facade.
Most common damp proofing
Of all types of moisture, rising damp is the most common. To combat this, opt for injecting. In injecting, the moisture specialist injects a moisture-resistant substance into your wall under high pressure. The substance stops rising damp. Do you have a cavity wall? Then the inside also needs to be injected. The total cost for this project is around £1,500.
Extensive damp proofing
Sometimes it is necessary to first repair the wall before the specialist starts the damp proofing work. When your wall suffers from cracks, gaps and poor jointing, moisture will continue to find its way into your home. Repairing the grouting, cleaning the wall and impregnating your facade costs an average of £3,000 for 100m2. Is injecting precisely what you need? If so, the total cost for a wall of 8 running metres averages £2,200.
The price breakdown of damp proofing
A specialist will use professional materials and tools such as a quality damp proofing gel and compressors with which the gel will be injected under high pressure into your wall . It is therefore advisable to outsource damp proofing to a professional.
Choices that affect the cost of damp proofing
How high the final cost will be is partly in your own control. It depends on the following choices:
Choice 1: Type of technique
Keep in mind that moisture control prices are very difficult to determine in advance. Damp cannot always be seen from the outside and the damage is sometimes many times greater than expected. Therefore, always have a specialist determine which method of moisture control is necessary in your situation by means of a moisture measurement (£ 0 – £ 50 per moisture measurement). In the overview below you will find the various techniques and associated costs.
| Type of damp proofing | Additional information | From price including VAT and materials |
|---|---|---|
| Moisture (technique: injecting) | Moisture is absorbed from the ground into the wall via cracks, crevices and poor jointing. To combat this, you opt for injecting. Injection involves injecting a damp-proofing substance into your wall under high pressure. | £100 per metre |
| Draining damp (technique: impregnation) | Impregnation is the method of choice for damp penetration. Impregnation involves applying a damp-proof layer to the external wall, preventing moisture from entering. | £10 per m2 |
| Basement (technique: basement waterproofing) | The basement is one of the most damp places in your home. To make sure your basement is dry again, have your basement sealed. In most cases, this involves applying several layers of cement to the basement walls, injecting and/or coating. | £125 per m2 |
Choice 2: Getting rid of mould
If you suffer from damp walls, chances are you also suffer from mould in your home. Mould in your home is bad for your health, so have mould properly removed by a professional. The average price for mould removal is around £150 for 3m2 of mould. Afterwards, moisture control can take place.
Choice 3: Repair the wall
Moisture problems result from a poor or damaged wall. This is because moisture migrates into the cracks and crevices of the pointing. To tackle damp proofing properly and make sure your home can last for years again, have the grouting replaced before it starts fighting damp. Having your wall grouted will cost an average of £18 – £23 per square metre, including materials and VAT.
Choice 4: Additional options
If you want to get it right the first time, choose to have your interior wall finished neatly by a professional after the damp proofing. The average drying time of a wall after injection is 6 to 12 months. Don’t feel like looking at an ugly wall for 12 months? Then have a moisture and salt resistant membrane placed between the wall and the finish and soon enjoy a clean beautiful wall again.
| Finishing | Average price including materials, labour and VAT |
|---|---|
| Membrane installation | £ 20 per m2 |
| Painting | £ 30 per m2 |
| Plasteringing | £ 18 per m2 |
| Tiling | £ 70 – £ 110 per m2 |
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